The refractive index of water is 4/3.
What is the speed of light in water?

a.2.25*10^8 m/s
b.4*10^8 m/s
c.1.5*10^8 m/s
d.2.67*10^8 m/s

• refractive index=c/v=4/3
  c=3*10^8m/sec
  v=2.25*10^8m/sec
  
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